package com.atguigu.chapter05.sink;

import com.alibaba.fastjson.JSON;
import com.atguigu.bean.WaterSensor;
import org.apache.flink.api.common.functions.RuntimeContext;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkFunction;
import org.apache.flink.streaming.connectors.elasticsearch.RequestIndexer;
import org.apache.flink.streaming.connectors.elasticsearch6.ElasticsearchSink;
import org.apache.http.HttpHost;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.client.Requests;
import org.elasticsearch.common.xcontent.XContentType;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * @Author lizhenchao@atguigu.cn
 * @Date 2021/7/17 10:44
 */
public class Flink02_Sink_ES {
    public static void main(String[] args) throws Exception {
        ArrayList<WaterSensor> waterSensors = new ArrayList<>();
        waterSensors.add(new WaterSensor("sensor_1", 1607527992000L, 20));
        waterSensors.add(new WaterSensor("sensor_1", 1607527994000L, 50));
        waterSensors.add(new WaterSensor("sensor_1", 1607527996000L, 50));
        waterSensors.add(new WaterSensor("sensor_2", 1607527993000L, 10));
        waterSensors.add(new WaterSensor("sensor_2", 1607527995000L, 30));
        waterSensors.add(new WaterSensor("传感器", 1607527995000L, 30));
        
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment().setParallelism(1);
        
        /*
        index ?   sensor
        type "_doc"   不能下划线开头, _doc 特殊的可以用
        id ?    sensor_1
        内容 ?   写 waterSensor对象
        
         */
        List<HttpHost> hosts = Arrays.asList(new HttpHost("hadoop162", 9200), new HttpHost("hadoop163", 9200), new HttpHost("hadoop164", 9200));
        env
            .fromCollection(waterSensors)
            .keyBy(WaterSensor::getId)
            .max("vc")
            .addSink(
                new ElasticsearchSink.Builder<WaterSensor>(
                    hosts,
                    new ElasticsearchSinkFunction<WaterSensor>() {
                        @Override
                        public void process(WaterSensor element,
                                            RuntimeContext ctx,
                                            RequestIndexer indexer) {
                            String json = JSON.toJSONString(element);
                            
                            IndexRequest index = Requests
                                .indexRequest()
                                .index("sensor")
                                .type("_doc")
                                .id(element.getId())
                                .source(json, XContentType.JSON);
                            
                            indexer.add(index);
                        }
                    }
                ).build()
            );
        
        env.execute();
        
    }
}
